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The crab nebula (m1) is a supernova remnant in the constellation Taurus. This is one of the few objects whos entire history has evolved in the course of human history. It was first noted by Chinese astronomers on July 4th 1054AD. According to the ancient records, it was visible during the daytime for 23 days and shone at a magnitude -6, three times brighter than venus! This photo was taken on the evening of November 22nd and is a composite of two photos, one a 90 minute and the other a 120 minute exposure. This was the first trial of my IDAS LPS filter, while it is great at reducing light pollution and increasing contrast, but wow, you need to really crank up the exposure time! These photos were taken at prime focus of the 12" LX200, guiding was right on, A4-A8, which is as good as it gets with that drive. The photo on the left is the raw composite of the two exposures, on the right is that same image combined with a 150 minute luminance component (hypered tech pan) taken on December 20th. |
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